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Inverse Relationship Between Radiographic Lateral Ankle Instability and Osteochondral Lesions of the Talus in
Byeong Seop Park1, Chin Youb Chung1, Moon Seok Park1
1Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.
Foot & Ankle International
|August 28, 2019
Summary
Radiographic lateral ankle instability inversely correlates with osteochondral lesions of the talus after ankle inversion injuries. Increased ankle instability may reduce the risk of talar cartilage damage.
Area of Science:
- Orthopedic Surgery
- Radiology
- Sports Medicine
Background:
- Ankle inversion injuries can lead to ligamentous damage or bone contusions.
- Bony constraint around the talus plays a role in ankle injury outcomes.
Purpose of the Study:
- To investigate the relationship between radiographic lateral ankle instability and osteochondral lesions of the talus (OLT).
- To understand the role of bony constraint in ankle inversion injuries.
Main Methods:
- 195 patients with ankle inversion injuries underwent MRI and stress radiography.
- Radiographic measures included tibiotalar tilt angle, anterior talar translation, bimalleolar tilt, and fibular position.
- Lateral ankle instability defined as tibiotalar tilt ≥10 degrees; OLT presence confirmed by MRI.
Main Results:
- A significant inverse relationship was found between radiographic lateral ankle instability and OLT (P = .003).
- Increased tibiotalar tilt angle was associated with a lower incidence of OLT (P = .011).
- OLT presence was associated with a decreased tibiotalar tilt angle (P = .016).
Conclusions:
- Lateral ankle instability shows an inverse relationship with OLT development after ankle inversion injuries.
- Bony constraint is a crucial factor to consider in the pathogenesis of ankle sports injuries.
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